image of freedom, ‘silvery bird’ is slightly out of place within North-West. Duffy, now a grown woman, is free to do what she wants. Yet this freedom, here presented as a metaphor for the ‘ferry’ as a ‘silvery bird’, is what takes her away from her past life. Duffy mourns all she has lost, but ‘silvery’ suggests that there is a happy quality of life she has achieved by leaving.